Current Washington state mortgage rates for 30-year fixed-rate mortgages remained stable at 3.87% on Friday. State mortgage rates today ranged from the lowest rate of 3.80% (ID) to the highest rate of 4.00% (RI). Washington state mortgage rates today are equal to the national average of 3.87%. The Washington state mortgage interest rate on December 2, 2011, is up 5 basis points from last week’s average Washington state rate of 3.82%.

Washington state mortgage rates quoted above are for the best borrowers and typically include points.